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Payne PY2PNB030040AA Defrost Sensor Board
The defrost control board determines when to initiate the defrosting phase which assists to get rid of the frost that collects on the outdoor unit. The defrost board looks to a sensor which is near the condenser somewhere, in order to make the decision on when to begin.
Important hints the defrost sensor board will not last the year
- Unit defrost session has not run for quite some time despite that there is a large amount frost on the outdoor unit
- The system will cease to function due in part to frost blocking the fins on the outside unit
- The main control board could display a particular error code referring to the failed defrost sequence
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